Method and machine for use in cutting sheet material



A. E. HUDSON.

METHOD AND MACHINE FOR USE IN CUTTING SHEET MATERIAL.

APPLICATION FILED JULY24. 1919.

1,403,497. Patented a 17, 1922.

Fig.1.

A. E. HUDSON.

METHOD AND MACHINE FOR USE IN cunme SHEET MATERIAL APPLICATION FILED JULY 24, 19H)- 1,4O3,497 Patented Jan. 17, 1922.

2 SHEETS-SHEET 2.

I l EA 70/2 unirso LLBERT E. HUDSON, OE BEVERLY, lvEASSACEUSETTS, ASSIGBTOR TO UI-IITED SE03 lvIACI-IINEEY CORPORATIQN, OF

13 E?! JERSEY.

IIIETIHOD AND I'EAUHZNE 133$ Application filed July 2%,

To all whom it may concern:

Be it known that I, Annitnr E. HUDSON, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented. certain Iniprovenients in Methods and Machines for Use in Cutting Sheet Material, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to dieing out blanks from sheet material and is especially applicable to dieing out blanks from a pile of superposed layers of stock. The invention is herein set foith for the purpose of illustration, but not by way of limitation, with particular reference to its use in. connection with presses of the general type illustrated in United States Letters Patent hlo. 921,503, granted May 11, 1909 on application of Arthur Bates.

Presses of the type described in said Letters Patent, known in the trade as clicking machines, have been used in large numbers with complete success for dieing out blanks, for example, shoe parts, from leather or fabric. In the use of such presses upon light leather or fabric stock or upon thin piles of fabric stock, ordinarily a single pressure-applying operation is entirely adequate to force the cutting die through the \vok so as completely to sever a blank. Dieing out blanks from very heavy stocr and particularly from substantial piles of layers of stock presents a different problem, due especially to the resistance to cuttin action presented by the marked tendency of the piled stock to react from the cuttingblow. This is conspicuously true of various fabrics such as are employed in the manu facture of boots and shoes as Well as in the manufacture of various kinds of garments.

An object of the present invention is to provide for rapidly and otherwise satisfactorily dieing out blanks from stock of Widely varyingcharacteristics. In one as-- pect the invention aims to increase the output from diein out operations, of which those above referred to are typical examples, by facilitating dieing out blanks from piles of layers of material so that it will be enflpecification of ON, X'TEVJ JER-SEY, A COR-POR-ATIQN GTE CUTTING SHEET MATERIAL.

Letters Patent- Patentcd Jan. 17, 1922.

Serial No. 312,893.

tirely practicable to cut at one time a relatively lar e number of layers of stock. in another aspect the invention aims to provide for dieing out blanks from sheets of stock in such manner that all the advantages heretofore resulting from the use of presses of the ty e above identified may be retained, and at the same time the usefulness of such presses may be still further increased, especially in connection with the dieing out of blanks from piles of sheet material. A

Presses of the type set forth in said Letters Patent are designed, among); other things, to afford opportunity for the utmost discrimination in the examination of the stoc r to be operated upon, and in the selection oft-he parts of the stock from Which the respective blanks are to be out. To this end such machines comprise characteristically a rigid cutting bed, a post mounted at one side of the bed, and a relatively long presser member mounted to reciprocate with the post and to swing freely over the bed substantially parallel to it to impart cutting blows to a die freely movable to any desired lo ation upon the bed. In the use of such machines upon heavy Work, especially upon piles of superposed layers of material, the resistance to the cutting action afforded by the inherent resilience and tendency of the pile to spring back is considerably augmented by the tendency of the presser 1neniher to spring away from the bed resulting; froin the organization above outlined.

in view of the above-entitled and other considerations, the present invention provides for forcing'a die step by step throhgh a pile of material by repeated hammer blows delivered against the die so rapidlv that the stock can not react from the conipression of the initial blow. As herein exemplified, to facilitate the severance of.

In the novel organization of apparatus herein set forth, the results described are secured by the provision of operating mechanism such that, in response to continued movement of a controller in one direction, a presser member delivers rapidly re peated blows against a die. To provide for effective use of the machine whenever it is sheet material, the starting means being shown in position to cause a single pressure applying operation upon actuation of said means;

Fig. 2 is a detail view, artly in section, of the clutch tripping mec lianism,

Fig. 3 is a perspective View of an element of the clutch mechanism, and

Figs. 4, 5 and 6 are detail views of the clutch mechanism.

In the illustrative machine the frame 4 carries a work supporting bed 6 and also a presser member 8 which is movable toward and from the bed in pressure applying operations. Rotatably mounted in the frame is a post 10 which carries the presser member, means being provided in the form of a handle 12 for swinging the presser member laterally over the work supporting bed into position over a die located on the work restmg on the work supporting bed. In the construction shown the handle 12 is arranged to operate a lever or controller 14 pivoted at 16 on the frame of the machine and connected by a link 18 to the clutch mechanism of the main shaft of'the machine. Thus, upon depression of the handle 12 the clutch mechanism is operated to connect the power to the shaft and rotation of the latter causes a pressure applying operation of the presser member. Ordinarily the presser member is then moved away from its position over the die and the latter is repositioned on the work, the presser member being at one side where it does not interfere with the proper manipulation of the die and of the work and with the access of light to the work. Vhen the work is prepared for another operation the presser member is swung over the die by means of the handle 12 and the starting or controlling mechanism operated to cause a pressure applying operation of the presser member as above described. For a more detailed description. of the construcing the shaft and the pulley, the clutch mechanism being preferably of the type shown in Patent N 0. 1,011,903 granted December 19, 1911, on an application filed by Arthur Bates, to which patent reference may be had fora more detailed description of those parts of the clutch mechanism which form no part of the present invention.

Rigidly attached to the shaft 20 is a clutch member 2 1- which carries slidably a plunger 26 operable to cause expansion or contraction of the ring 27 through turning of the screw 29, connection being madebetween the screw and its operating plunger 26 by means of an arm 31 secured to the screw by pin '35 (Fig. 6). machine is a lever 30 having an end portion adapted to operate the plunger 26. hen the plunger 26 is released by withdrawing the wedge end of the lever 30, the spring 87 moves said plunger in the direction to turn the screw 29 to expand the ring 27 (partly shown in Fig. '5) so that the latter engages the inside of the flange 39 on the pulley 22 and operatively connects the pulley to the clutch member at fixed to the shaft. On the other hand, the wedge end of the lever 30 operates at the proper time to move the plunger 26 against the spring 37 and thereby cause contraction of the ring 27 and release of the pulley from the shaft. In order to lift the member 30 away from the plunger 26 there is provided a tripping mechanism comprising a lever 32 also pivoted at 28 and carrying a plate 341 arranged to engage under a similar plate 86 on a latch member 38 pivoted at 40 on the member 30. Thus, upon upward movement of the lever 32 the latch member 38 is caused to lift the member 30 away fromthe plunger 26 and'is then arranged to be released from the lever 32 through a projection 33 on the clutch member 24 engaging the tail 35 of member 38, so that the member 30 dropping back into its operative position may re-engage the plunger 26 at the proper time to cause disconnection of the movable clutch member or flange 39 on the pulley 22 from the stationary clutch member 24: on the shaft. For operating the lever 32 there is provided the hand operated lever 141 connected by the link 18, as above described, to the member 82. In the construction disclosed in the said patent to Bates No. 1,011,908, the member 30 operates to retract the plunger 26 at the end of one revolution of the shaft 20. In applicants invention and as shown in the illustrative construction, the member maybe held upwardly away from the plunger 26,

Pivoted at 281011 the frame of the so that two revolutions of the shaft may take place, by means now to be described.

Mounted on a vertical shaft 44 in the frame of the machine is a member 46 having a flange portion 48 which is arranged to contact with a projecting portion 50 of the member 30 to hold the latter out of contact with the plunger 26, the said member 46 also having a slot 52 for receiving the projection 50 and thus permitting the end portion of the member 30 to engage the plunger 26. I For driving the shaft 44 there is provided a gear wheel 54 on the shaft 20 having teeth constantly in mesh with an in termediate gear 56 on a stub shaft 58 which carries a worm 6O meshing with a worm gear 62 secured to the shaft 44. The relationship of the gears just described is such that two revolutions of the gear 54 are required to effect one revolution of the gear 62 so that the shaft 20 normally revolves twice to one revolution of the member 46. Hence, when the starting lever is depressed, thus lifting the member 30 away from the clutch controlling plunger 26, the projecting portion 50 of the member 36 is moved out of the slot 52 in the member 46 and is engaged with the flange portion 48 of said member during two revolutions of the main shaft, just prior to the termination of which the slot 52 is again brought opposite to the projecting portion 50 of the member 80 so that the latter can drop into position to en age again the clutch operating plunger 26 to unclutch the power pulley from the shaft. While in the construction shown only two pressure applying operations take place upon actuating the starting mechanism through handle 12, the invention is not so limited, it being clear that a plurality of revolutions of the main shaft other than two may be secured in various ways, as for instance, by changing the gears above de scribed.

Means are provided for varying the normal operation of the clutch tripping mechanism just described so that in the present construction but one revolution of the shaft will be produced upon actuating the controlling or starting mechanism. As shown this means comprises devices mounted on the starting lever 14 and arranged to be easily operated by the hand which grasps the handle 12 and having connections for controlling the member 46 for retaining the latter in another operative position for a purpose to be described. Referring to Fig. 1 of the drawings there is disclosed an illustrative embodiment of a controlling means for the clutch tripping mechanism comprising a lever 64 pivoted at 66 to a clamp 68 on the lever 14 and located closely adjacent to the handle 12 so that the lever may be operated by a finger introduced into the ring 70 of the lever. Pivot-ally connected to the lever is a link 72 which is also pivotally connected to a latch 4 pivoted at 76 to a bracket 78 on the starting lever, the latch being normally held in inoperative position by means of a tension spring 80 having its ends connected to the levers 14 and 64 respectively. W hen the lever 4 is pulled toward the handle 12 the latch 74 is caused to engage over the upper surface of the arcual portion 82 of a lever 84 pivoted preferably upon the same pivot 16 for the lever 14. Clearly the forward part 82 of the lever 84 must be arcuate in form in order that the latch 7 4 may engage therewith in whatever position the presser member 8 may occupy. As shown in Figs. 1 and 2, the rear end of the lever 84 is connected by a link 86 to the clutch controlling member 46, the said connection comprising a U-shaped member 88 secured to the link 86 and having pins 90 which extend into a circular groove 92 provided in an upward extension of the member 46, the pin and roove connection permitting rotation ofthe member 46 and yet serving as a means for connecting the member 46 to the link 86 to be lifted thereby. W'hen the member 46 is lifted from its normal position, a groove or slot 94 in the upper surface thereof is engaged with a lock 96 so-that the member 46 will not ro tate with its shaft, and thus the slot 52 is maintained opposite to the projecting portion 50 of the member 30 so that the projection may drop into the slot as soon as the member 301s released by its latch 38 which occurs early in the=first revolution of the main shaft 20, as described in said Patent No. 1,011,903. Hence the main shaft will be turned through only one revolution when the member 46 is lifted as described. It should be pointed out that the member 46 is connected to its driving shaft 44 by means of a double armed'pin' 98 which is received normally into a slot in the lower surface of the member 46. Clearly, when the latter member is raised by the connections described it is moved away from its driving pin 98 and retained againstturning through friction with the shaft 44 by means of the lock 96. This latter memberor lock is mounted upon a pin 100 extending through the projection 50 and is held normally against a stop 102 by a torsional spring 104 so that the lock 96 may yield laterally if, through incorrect adjustment of the connections in setting up the machine, the member 46 should be positively driven while it is in lifted position. It will be observed that the engaging end of the lock member 96 is roughly wedge shaped so as to turn readily out of the slot 94 should member 46 be driven under abnormal conditions. With the parts arranged in the manner described the main shaft 20 is turned through one complete revolution which effects,

among other things, the turning of the shaft 44 through one-half of a revolution and thus the pin 98 is turned end for end and is then in position to be received within the slot in the bottom face of the member 4:6 when the latter is lowered at the termination of a single pressure applying operation.

In operating with the machine above described, the work is placed upon the work supporting bed 6 and a die is located in the desired position while the presser member is at one side of the site of operations, and then the presser member is moved laterally toward the die and the starting mechanism actuated while the prcsser member is moving to cause one or more blows on the die to force the die through the material; If the work consists of a single layer of material. or of two or three layers of light sheet material, the die is readily operated to cut blanks from the material upon a single pressure applying operation of the presser member obtained by operating lever 64 together with the handle 12. If, however, there are many layers of sheet material being operated upon, or a single layer of particularly heavy material, it is sometimes necessary to strike several blows upon the die to force it completely through the work. This can be accomplished by the use of the type of machine like thatshown, for instance. in Patent No. 921,503 cited above, simply by depressing the bandle oi' the starting mechanism a plurality of times, once for each pressure applying operation of the presser member. In that case, however, the multiple-layered material which constitutes the work has time to react from the compression of the initial blow that is, to rise between blows, whereaswith the construction of the improved machine the blows are repeated so rapidly, upon depressing the handle 12, that the die and the material have no time to react between blows and the die is forced through all the layers of the material with greater certainty and speed. It will be clear, moreover, from this manner of cutting sheet material, that a machine of less power and of less weight may be used in effecting cutting operations on a multiplicity oi. layers of material. than if the machine were organized to cut through all of the layers at one pressure applying operation, the method here practiced involving the cutting of the layers progressively by frequently repeated blows on the die. It should be explained in this connection that. while the presser member is so constructed with respect to the work supporting bed as to operate normally to drive a die completely through the material on the bed, the said presser member is so mounted as to yield away from the bed when the die is being driven through work of a denser character I than usual, or when many layers of material are being operated upon. This springing of the presser member away from the bed is dependent upon a certain amount of spring or yielding in the frame of the machine and especially in the approximately C-shaped arm which supports the post for the presser member. It is consideredthat the method of cutting sheet material herein disclosed is a matter of importance since it provides for increased usefulness of the ordinary clickingpress in the cutting of heavy stock and of material in many layers. Furthermore, this machine may be used in the practice of a method of cutting through heavy material or through many'layers of material in superposed relation which PlOVlClGS for striking the die at different places by rapidly repeated blows which progressively force the die through the work. i 7

Having described my invention, what I claim and desire to secure by LettersPatent oi the United States is z- 1.. That improvement in methods of dieing out blanks from sheet material, which consists in piling up layers of material upon a rigid cuttingbed, placingthe die to'be used upon the pile of stock, imparting a hammer blow to the die, and repeating the hammer blow upon the die wlnle the die is in the same location substantially instantaneously and before the stock reacts from the compression of the initial blow to forcethe die through i the pile of material.

2. That improvement in methods of dieing out blanks from sheet material, which consists in piling up layers of material upon a rigid cutting bed, placing the die to be used upon the pile of stock, delivering a hammer blow againstthe die of sufficient force substantially to exhaust thecompressibilityof the pile of stock and force the die part way through the pile to facilitate the severance of the blanks from the pile, and repeating the hammer blow to forcethe die through the uncut layers of stock before the stock reacts from the initial blow.

3. That improvement in methods of dieing out blanks from sheet material, which consists in piling up layersof material upon arigid cutting bed, placing the die to be used upon the pile of stock and forcing the die step by step through the pile by, aplurality of hammer blows delivered against the die so rapidly that the stock cannot react from one blow before the die receives the succeeding blow.

4. That improvement in methods of dieing out blanks from sheet material, which consists in piling up layers of material upon a rigid cutting bed, placing the die to be used upon the pile of stock, and subjecting the die to rapidly repeated blows applied at different points on the dieto drive it progressively through the pile of stock.

5. A machine for dieing out'blanks from a pile of superposed layers of stock, comprising a rigid cutting bed, a die, a presser member, and operating mechanism for the presser member including a controller responsive to continued movement in one direction to cause the presser member to deliver repeated blows against the die.

6. A machine for dieing out blanks from,

superposed layers of stock, comprising a rigid cutting bed, a die, an. upstanding post at one side of the bed, an elongated presser member carried by said post for reciprocation therewith, said presser member extending over the bed and being mounted for tree winging'movement in a plane parallel to the bed, and operating mechanism organized to counteract the spring ot the presser member and its supporting post by effecting rapidly repeated blows of the presser member against the die upon the bed.

7. A machine for dieing out blanks from superposed layers of stock, comprising a rigid cutting bed, a die, an upstanding post at one side or" the bed, an elongated-presser member carried by said post vtor reciprocation therewith, said presser member extending over the bed and being mounted for free swinging movement in a plane parallel to the bed, and operating mechanism organized to effect successive blows of the presser member against the die to force the die step by step through the pile of stock with such rapidity as to offset the tendency of the presser to spring away from the bed. T

8. A; machine for dieing out blanks from superposed plies of stock comprising a rigid cutting bed,-a die, a presser member, and operating mechanism organized to eiiect rapidly repeated blows of said member upon the die to drive the die progressively through the stock.

9. A machine for dieing out blanks from superposed plies of stock comprising a rigid cutting bed, a die, a striking or presser member, and operating mechanism including a continuously running driving means, con-- nections between said mechanism and the presse member, a clutch, and a clutch controller all organized to effect reciprocations of the presser member in uninterrupted rapid succession in response to continuous pressure on the controller.

11. A machine for dieing out blanks from superposed plies of stock comprising a rigid cutting bed, a die, a striking or presser membermounted to swing over the di in a plane near the die, and operating mechanism including a continuously running driving means, connections between said mechanism and the presser member, a clutch, and a clutch controller all organized to effect reciprocations ot the presser member in uninterrupted rapid succession in response to continuous pressure on the controller, and while the presser member is free to be swung to positions for delivering the blows at different points onthe die.

12. In a machineoif the class described, a, work supporting bed, a presser member movable toward and from the bed in pressure applying operations, a shaft for operating the presser member, a clutch on the shaft, and means for controlling the clutch to cause a predetermined plurality ofoperations of the presser member upon single actuation of said means. V a

13. In a machine or" the class described, a work supporting bed, a presser member movable toward and from the bed in pressure applying operations, a shaft for operating the presser member, a clutch on the shaft, and means for controlling the clutch to cause a single operation or a predetermined plurality of operations of the presser member at the will of the operator following a single actuation of'said means. I

14. In a machine of the class described, a work supporting bed, a presser member movable toward and from the bedin pressure applying operations, a shaft for opera ting the presser member, a clutch on the shaft, means for'controlling the clutch to cause a predetermined number ofoperations of the presser member upon a single actuation of said means, and means for varying the control exercised by the first-mentioned means.

15. In a machine of the class described, a presser member, a work supporting member, means for causing pressure applying movements of thepress'er member, and means for controlling the saidjfirst-mentioned means to cause a predetermined plurality of operations of the presser member upon a single actuation or the controlling means.

16. In a machine of the class described, a presser member, a work supporting member, means for causing pressureapplying movements of the presser member, and means for controlling said first-mentioned means to cause a single operation or a predetermined pluralityot operations oithe presser member at the will of the operator in either case upon a single actuation of the controlling means.

17. In a machine of the class described, a presser member, a work supporting member, means for causing pressure applying movements of the presser member, means for controlling the first-mentioned means to cause a predetermined number of operations of the presser member upon a single power means for moving the presser member toward and from the bed,- starting mechanism for controlling the power means and normally operative to cause a plurallty of pressure applying movements of the presser member, and means mounted on the starting mechanism for varying the operation thereof.

19. In a machine of the class described, a work supporting bed, a presser member, power means for moving the presser member toward and from the bed, a starting mechanism for controlling said power means comprising a member for holding the starting mechanism in operation during a plurality of. operations of the presser memher, and means for rendering said member inoperative at the will of the operator.

20. In a machine of the class described, a work supporting bed, a presser member movable toward and fromthe bed in pressure applying operations, power means for operating the presser member including a shaft, a clutch mechanism on said shaft, starting mechanism for tripping said clutch comprising a member constructed and arranged to hold the starting mechanism in clutch tripping position, and means mounted on the starting mechanism for controlling said member so as tovary the normal operation of the starting mechanism.

21. In a machine of the class described,

presser members movable toward and from each other in pressure applying operations, power means for causing relative movement ofthe presser members comprising a shaft, a clutch mechanism on the shaft, means for tripping the clutch to connect the same to the shaft andv cause a plurality of rcvolu tions of the latter upon one actuation of said tripping means, and means, under the control of the operator for varying the operation of said tripping means, thereby to secure one or a plurality of pressure applying operations at the will of the operator.

22. In a machine of the class described, presser members movable toward and from each other in pressure applying operations, power means for causing relative movement of; the presser members comprising a. shaft, a clutch mechanismon the. shaft, means for. tripping the clutch mechanism constructed and arranged to cause a plurality of'revolutions of the shaft, said tripping means comprising a member which is. operas tive to hold the tripping means operative during said plurality of revolutions of the shaft, andmeans underthe control of the opcrator'for varying the position of sald member and thereby changing the normal --1 rcane? operation of said tripping means to secure one or a plurality of pressure applying operations at the will of the operator.

2-3. I11 a machine of the class described, presser members movable toward and from each other inpressure applying operations, power means for causing relative movement of the presser members comprising a shaft, a power pulley on the shaft, clutch mechanism for connecting the pulley to the shaft, a starting mechanism for tripping the clutch mechanism and thus connecting said pulley to said shaft comprising a rotary member operatively connected to the shaft to be driven thereby, and means under the control of the operator to move said member and thereby vary the operation of said starting mechanism to secure one or a plurality of pressure applying operations at the will of the operator.

2a. In a nachine of the class described, presser members movable toward and from each other in pressure applying operations, power means for causing relative 'movement of the presser members comprising a shaft, a power pulley on the shaft, clutch mechanism. for connecting said pulley to said shaft, starting mechanism for tripping the clutch comprising a rotary member arranged to be driven by said shaft, and means under the control of the operator to disconnect said member from the shalt and thus vary the operation of the starting mechanism in such manner that the number of revolutions of the shaft: is effected to secure one or a plurality of pressure applying operations at the will of the operator.

25. In a machine of the class described, a work supporting bed, a presser member movable toward and from the bed in pressure applyingoperations, power means comprising a shaft for operating the presser member, a clutch on the shaft, a starting lever having a handle movable with the presser member, connections between the lever and the clutch for controlling the latter, a lever mounted on the first mentioned lever,and connections between the second lever and the clutch mechanism so arranged that si multaneous operation of both. levers results in the clutching of the'shaft for a single pressure applying operation.

26. In a machine of the class described, a work supporting bed, a presser member movable toward and from the bed in pressure applying operations, power means com prising a shaft for operating the presser member, a clutch on the shaft, a lever for directly controlling the clutch, a rotatable member for controlling the lever, and two manually controllable levers mounted to move with the presser member for controlling the first mentioned lever. and the rotatable member respectively, the arrangement being such; that one or. a plurality of pressure applying operations may be initiated by the operator through control of the levers movable with the pressure member.

27. In a machine of the class described, a work supporting bet, a presser member movable toward and from the bed in pressure applying operations, power means comprising a shaft for operating the 5-98891- member, a clutch on the shaft, a lever tor directly controlling the clutch, a rotatable member arranged to be operated by said shaft to control said lever, and two levers mounted to move with the presser member and having connections with the firstmentioned lever and with said rotatable member respectively and operable to effect one or a plurality of revolutions of the shaft at the will of the operator to cause one or a plurality of pressure applying operations of the presser member.

28. In a machine of the class described, presser members relatively movable toward and from each other in pressure applying operations, power means comprising a shaft for causing such relative movementof the prcsser members, a power pulley, a clutch for operatively connecting the shaft to the said pulley, a manually operable lever on one of the presscr members having connections for causing the connection of the shaft and pull y for a predetermined number of revolutions, and a second lever mounted on the first mentioned lever and having connections arranged to change the operation of the clutch eiiected by operation solely of the first-mentioned lever.

Q). In a machine of the class described, prcsser members relatively movable toward and from each other in pressure applying operations, power means com: rising a shaft for causing such relative mo.e1nent 015 the presser members, a driven member freely rotatable with respect to the shaft, a clutch for opera-tively connecting the shaft to the driven member, a manually controllable lever having connections for operating the clutch, and a member controlled by the shaft for locking the said connections in the position to which they have been moved by the manipulation of the starting lever so as to ensure a predetermined number of revolutions oi"- the shaft.

30. In a machine of the clam described, presser members relatively movable toward and from each other in pressure applying operations, power means comprising shaft for causing such relative movement of the prcsser members, a power pulley, a clutch for operatively connecting the shaft to the said pulley, a lever movable with one of the presser members and manually operable for causing the connection or" the shaft and pulley for a plurality of revolutions of the pulley. and a second lever movable with the first mentioned lever and having c0nnec the clutch so that but one revolution of the shaft "follows manipulation 0t both levers.

31. In a machine of the class described, presser members relatively movable to'vvard,

and from each other in pressure applyin operations, power means comprising a shaft for causingsuch relative movement of the presser members, a driven member freely rotatable with respect to the shaft, a clutch i'or operativel connecting the shaft to the driven member, a manually controllable lever having.connect-ions for operating the clutch, a member controlled by the shaft for locking; the said connections in the position to which they have been moved by the manipulation of the starting lever so as to ensure a predetermined number of revolutions of the shaft, and a second lever manually operable to render said locking means inoperative thereby causing a single'revolution only of the shaft upon manipulation of the first mentioned lever.

in a. machine of the class described, prcsser membe s relatively movable toward and, from each other in pressure applying operations, power means comprising a shaft for causing such relative movement of the presser members, a driven member rotatable i: dependentlyof the shaft, a clutch tor operatively connecting the driven member 0 the shaft, a lever movable with one of he presser members and operable for controlling the clutch, connections between-said ...iember and the clutch comprising a member directly controlling the clutch, and a member driven by the shaft for locking the clutch controlling member in inoperative position during a predetermined number of revolutions of the shaft.

. 33. In amachine of the class described, presser members relatively movable towarc and from each other in pressure applying operations, powermeans comprising a shaft for causing such relative movement of the presser members, a. driven member normally rotatable independent of the shaft, a clutch for operatively connecting the driven member and shaft, a lever having connections for controlling the clutch, a lock controlled by the shaft forlocking the said connections in inoperative relation to the clutch during a predetermined number of revolutions of the shaft, and a second lever movable with one of the presser members and also manually controllable for moving the lock so as to render it inoperable there by changing the operation of the said connections whereby a different number-o1": revolutions of the shaft takes place upon manipulation of the first mentioned lever.

3%. In av machine of the class described, presser members relatively movable toward and from each other in pressure applying operations, power means comprising a shalt for causing such relative movement of the presser members, a driven member rotatable independently of the shaft, a clutch for op- 'eratively com'iectingj the driven members to the shaft, a manually operable lever for presser members relatively movable toward and from each other in pressure applying operations, power means comprising ashaft for causing such relative movement of the presser members, a driven member normally rotatable independent of the shaft, a clutch for operativelv connecting the driven memberand shaft, a lever having connections for contriilling the clutch, a lock controlled by the shaft for locking the said connections in inoperative relation to the clutch during a predetermined number of revolutions of the shaft, and a second lever also manually controllable for moving the look so as to rend-er it inoperable thereby changing the operation of the said connect-ions whereby a different number of revolutions of the shaft takes place upon manipulation of the first mentioned levers 36. In a machine of the class described, pressermembers relatively movable toward and from each other in pressure applying operations, power means comprising a shaft mounted on the first mentioned lever and having connections controlled by the shaft for varying the operation of the first men tioned connections whereby one or a pin 'rality of rotations: of the shaft may be caused at the will of the operator-upon manipulation of the first mentioned lever.

37. In a machine of the class described, presser members relatively movable toward and from each other in pressure applying operations, power means comprising a shaft for causing such relative movement of the pro ser members, a driven member normally rotatable independently of the shaft, a clutch for operatively connecting the driven member and shaft, a lever having c0nncctions for operating the clutch, and a second lever mounted to move with one of the presser members and having connections controlled bythe shaft for varying the operation of the first mentioned connections whereby one or a plurality of rotations of the shaft may be caused at the-Will of the operator upon manipulation of the first mentioned lever.

Intestimony whereof I have signed my name to this specification.

ALBERT E. HUDSON. 

